DocumentCode :
407889
Title :
Performance evaluation of a data-derived iterative channel estimator for a COFDM system with receive diversity
Author :
Dowler, Alex ; Nix, Andrew
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Volume :
2
fYear :
2003
fDate :
6-9 Oct. 2003
Firstpage :
1224
Abstract :
A low-complexity data-derived iterative channel estimator is evaluated in a receive diversity system for two and four receive antennas. The performance is shown almost to match the ideal (perfect channel knowledge) case in a low-Doppler environment. At higher Doppler frequencies, performance is still good, but deviates from the ideal case. A Wiener filter tracking algorithm is proposed that is advantageous at lower Eb/N0 ranges, however linear tracking is found to be better at higher Eb/N0 ratios and therefore further improves performance for higher order modulation schemes such as 16-QAM.
Keywords :
Doppler effect; OFDM modulation; Wiener filters; channel estimation; diversity reception; iterative methods; receiving antennas; tracking filters; COFDM system; Eb/N0; QAM; Wiener filter tracking algorithm; data-derived channel estimator; diversity reception; higher order modulation schemes; iterative channel estimator; perfect channel knowledge; receive antennas; receive diversity; tracking filter; Channel estimation; Decoding; Diversity reception; Equations; MIMO; Receiving antennas; Transmitting antennas; Wide area networks; Wideband; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th
ISSN :
1090-3038
Print_ISBN :
0-7803-7954-3
Type :
conf
DOI :
10.1109/VETECF.2003.1285217
Filename :
1285217
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=407889
بازگشت